The psychological-ideological roots of philosophy. -/- ●●●●● 2022 UPDATE: The approach of this paper has been updated and developed further in Chapters 1 and 2 of the author’s 2021 book _Critique of Impure Reason: Horizons of Possibility and Meaning_. The book is available both in a printed edition (under ISBN 978-0-578-88646-6 from Barnes & Noble, Amazon, and other booksellers) and an Open Access eBook edition (available through Philpapers under the book’s title and other philosophy online archives).